Answer: 3.68 x 10^21 particles
Explanation:
Based on Avogadro's law:
1 mole of any substance has 6.02 x 10^23 atoms
Since 1 mole is the same as molar mass of a substance
237 g = 6.02 x 10^23 atoms
1.45g = Z atoms
To get the value of Z, cross multiply:
(Z atoms x 237g) = (6.02 x 10^23 atoms x 1.45g)
237Z = 8.729 x 10^23
Z = (8.729 x 10^23 / 237)
Z = 3.68 x 10^21
Thus, there are 3.68 x 10^21 representative particles in 1.45 g of the molecular compound.
Answer:
Increased heat,increased pressure,or the use of nuclear catalyst.
Answer:
Initially the alpha particle has only kinetic energy EK. As it approaches the gold nucleus it suffers repulsion by the 79 protons within that nucleus. Its kinetic energy changes into electric potential energy EP.
When neutron numbers are changed an ISOTOPE of the element is formed...
the atom becomes an ISOTOPE